If you love Dickens like I love Dickens, here is a comprehensive website.
I started reading Dickens seriously in my senior year of college. I am not sure what started me, but I know I picked up my first copy at the bookshop at Wake Forest University. Of course I'd read A Christmas Carol as a kid, and I'd read A Tale of Two Cities and Great Expectations in high school. I liked them both, and Great Expectations was later to become one of my favorite Dickens novels, but you know how it is with books you're forced to read: you don't connect in the same way as you do with something you read because you want to.
The first book I read on my own was The Pickwick Papers. I adored every single one of the Pickwick Club---I wanted Mr. Pickwick to be my grandfather---but I really fall in love with the comically terse (but very naughty) con man Alfred Jingle and then, inalterably, with the cockney manservant Samuel Weller. Over the next few years, I read my way through his other works. I've always had a tendency to fall in love with fictional gentlemen or "gentlemen" in Jingle's case, and quite a few of my fictional affaires were with characters from Dickens.
The ones I really loved best were the ones I'd never heard much about: Our Mutual Friend (because I developed a severe crush on the caddish Eugene Wrayburn and a slightly lesser one with his partner, Mortimer Lightwood) and Little Dorrit (sweet, gentlemanly Arthur Clennam, ditto, though I think I had even more of a girl-crush on tiny Amy Dorrit herself). I am only slightly less fond of Bleak House.
I only recently read The Mystery of Edwin Drood, Dickens' mysterious final novel. I have been puzzling ever since over where he was going with it. The frontispiece for the novel (which was prepared according to his instructions) infuriatingly hints at what might be going to happen, but of course it's hard to know for certain. I can remember studying it at some length trying to work out what it meant. Did John Jasper really kill Edwin? While it seems the most obvious explanation, there are other possibilities that might explain his bizarre behavior.
It's true that at the point the novel breaks off, he is beginning to take on the tiresome, moustache-twirling quality of Dickens most unsubtle villains and stalkers, but I was hoping for an unexpected twist: it seemed unlikely that CD would tip his hand in that fashion since he was determined to write a true mystery (and perhaps piqued at the success of former friend/later rival Wilkie Collins' The Moonstone). I was very much taken with the suave and enigmatic Datchery and longed to know who he was and what his interest was in Drood.
I got a lot of my ideas from a wonderful Italian book (by Carlo Fruttero and Franco Lucentini) called The D Case, in which a number of fictional detectives meet to solve the case, but I've looked at many other sources since. Alas, the book is more of a mystery than I think Dickens intended.